Include objbase.h where need to get the DllRegisterServer prototype.

dlls/cryptnet/cryptnet_main.c

@@ -31,6 +31,7 @@
 #include "winnt.h"
 #include "winnls.h"
 #include "wininet.h"
+#include "objbase.h"
 #define CERT_REVOCATION_PARA_HAS_EXTRA_FIELDS
 #include "wincrypt.h"
 

dlls/hnetcfg/hnetcfg.c

@@ -20,6 +20,7 @@
 
 #include "windef.h"
 #include "winbase.h"
+#include "objbase.h"
 #include "wine/debug.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(hnetcfg);

dlls/winhttp/main.c

@@ -22,6 +22,7 @@
 
 #include "windef.h"
 #include "winbase.h"
+#include "objbase.h"
 #include "winhttp.h"
 
 #include "wine/debug.h"

dlls/wintrust/register.c

@@ -26,6 +26,7 @@
 #include "winuser.h"
 #include "winreg.h"
 #include "winnls.h"
+#include "objbase.h"
 
 #include "guiddef.h"
 #include "wintrust.h"